Final answer:
In the initiation of a plan, it is crucial for a supervisor to avoid being hasty and to carefully consider all possible options.
Step-by-step explanation:
When formulating a plan, a supervisor must not be overly hasty, which means they should take the necessary time to consider all feasible choices before making any quick decisions. This approach allows for a more comprehensive and deliberate evaluation of the available options, which is important for effective decision-making and successful outcomes.